Hi,
Do you listen to radio from your computer?
Do you want only a two channel amplifier?
Do you want a stereo integrated amp? > This might just be what you are looking for.
Would you prefer a stereo receiver?
About an A/V receiver with 5 or 7 channels?
From what I can understand, you will be satisfied with a stereo integrated amp, just like your older JVC integrated amp.
You can get some nice Yamaha, or Marantz, or Denon stereo integrated amp for way less than $300, for a refurb or used model on the internet.
I bought a brand new Denon integrated amp (pre-main amplifier) the PMA-250, way back in 1987 for only $250 cdn (about $180 usa at that time), and I still use it. It sounds very good and have a very nice headphone jack and quite a few source inputs, a tape monitor, a CD Direct input, a phono input, a tuner input, an Aux input, some nice turning knobs for the Bass & Treble controls and a Balance control.
It is 30 watts per channel, it is plenty for the room where I use it, and it works like I just bought it yesterday. It is very well designed and have a short special circuitry for the most direct and short path for the best sound. The CD Direct is also a very nice feature. The tape monitor is cool too.
Yamaha also have some very nice integrated amps that cost very little and sounds like high end.
Same for some Marantz and Pioneer models, and Onkyo too.
If I will be looking to buy another integrated amp for about $300, I will look in particular at some Denon and Yamaha models.
And if I want to save some money, let's say for about $150 to $200, I will buy a nice refurb or a used one from a reputable place, that will list originally for about $500 to $750.
So, even with $100, you can get something that was listed at $400 originally. Deals are everywhere.
Hope this help,
Bob